Abstract: A gateway apparatus for performing transfer control of frame data between communication channels includes a routing map that stores ID information about the frame data and information about a communication channel that uses the ID information, and a search engine unit that routes the frame data to a transfer destination on the basis of the ID information of the frame data received and the routing map. The search engine unit does not transfer the frame data to the transfer destination when the ID information about the frame data received is ID information that is not used in the communication channel through which the frame data is received.

Abstract: An error detector has a parity bit generator which generates error detection data for data strings sent from a CPU I/F to a memory, a parity checker which detects an error in the data strings output from the memory based on the error detection data, and a selector circuit which switchingly outputs the data from the parity bit generator and the data from a CPU which sends diagnostic data. While the selector circuit is switched to output the data from the CPU, based on the error detection data output from the selector circuit, the error detector conducts a failure diagnosis of error detection functions including at least one of the parity bit generator and the parity checker.

Abstract: A data search device that is provided in a communication apparatus detects a memory area storing data to be transmitted from a memory unit having memory areas defined by IDs allotted to data. The data search device includes: a first flag that is provided for each of the memory areas of the memory unit, and indicate whether the data in the corresponding memory area is updated; a second flag that is provided for each group consisting of a predetermined number of the first flags, and indicates a data update state when at least one set of data in the first flags in the corresponding group indicates an updated state; and a search control unit that detects the memory area storing the data to be transmitted, by searching for the corresponding first flag after detecting the second flag.

Abstract: A gateway apparatus for performing transfer control of frame data between a plurality of different communication channels is provided with a time stamp unit for adding time stamp information to received frame data and a data discarding unit for determining processing delay of the frame data or abnormality of the apparatus by referring to the time stamp information and for deleting the time stamp information added to the frame data at the time of sending the frame data.

Abstract: A data search device that is provided in a communication apparatus detects a memory area storing data to be transmitted from a memory unit having memory areas defined by IDs allotted to data. The data search device includes: a first flag that is provided for each of the memory areas of the memory unit, and indicate whether the data in the corresponding memory area is updated; a second flag that is provided for each group consisting of a predetermined number of the first flags, and indicates a data update state when at least one set of data in the first flags in the corresponding group indicates an updated state; and a search control unit that detects the memory area storing the data to be transmitted, by searching for the corresponding first flag after detecting the second flag.

Abstract: An error detector has a parity bit generator which generates error detection data for data strings sent from a CPU I/F to a memory, a parity checker which detects an error in the data strings output from the memory based on the error detection data, and a selector circuit which switchingly outputs the data from the parity bit generator and the data from a CPU which sends diagnostic data. While the selector circuit is switched to output the data from the CPU, based on the error detection data output from the selector circuit, the error detector conducts a failure diagnosis of error detection functions including at least one of the parity bit generator and the parity checker.

Abstract: A gateway apparatus for performing transfer control of frame data between communication channels includes a routing map that stores ID information about the frame data and information about a communication channel that uses the ID information, and a search engine unit that routes the frame data to a transfer destination on the basis of the ID information of the frame data received and the routing map. The search engine unit does not transfer the frame data to the transfer destination when the ID information about the frame data received is ID information that is not used in the communication channel through which the frame data is received.

Abstract: A gateway apparatus for performing transfer control of frame data between a plurality of different communication channels is provided with a time stamp unit for adding time stamp information to received frame data and a data discarding unit for determining processing delay of the frame data or abnormality of the apparatus by referring to the time stamp information and for deleting the time stamp information added to the frame data at the time of sending the frame data.

Abstract: A connector apparatus for a card-like data processing medium comprises a frame (12) having opposing side walls (16a, 16b) that define a storage space (24a, 24b) of the connector apparatus. One end of the frame (12) defines an insertion inlet (22) for inserting a card-like data processing medium (30) in the storage space. A header containing a terminal array (32) is coupled to the end of the frame opposite the insertion inlet (22). An ejection mechanism (40a, 40b) is provided for ejecting the card-like data processing medium (30) from the storage space by manual operation of a push rod (48) that is coupled to the ejection mechanism (40). Means responsive to a control signal are provided for automatically decoupling the push rod (48) from the ejection mechanism to desable the ejection mechanism.